Honestly, it's waaay to long by now for me to post anywhere this way. But, it's all available on the journal of my mule, Jacopothewolf.
It's a friends-only journal, but do not fear! You can send a PM or friend request to the mule, and I will quickly respond with (probably) a "yes" answer!
The story is called "Night Creatures", it's got about thirty-something chapters thus far and is still in the middle of the storyline. It's about, well, a lot of things; suffice to say it's a modern-fantasy type setting and the first chapter involves a human watching his girlfriend turn into a werewolf (nothing explicit, I swear!)